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Phone Nokia Lumia 635 (CDMA) Samsung Galaxy S6 (GSM) Alcatel 665 HTC Shadow
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 4.5" diag.
16 : 9
5.1" diag.
16 : 9
1.8" diag.
4 : 3
2.6" diag.
4 : 3
Display Resolution & Type 480 x 854 pixels
(~218 ppi)
LCD (TFT/TFD)
1440 x 2560 pixels
(~576 ppi)
AMOLED
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~154 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ?
Battery 1,830 mAh 2,550 mAh 650 mAh 920 mAh
Processor 1.2 GHz Qualcomm Snapdragon 400 (MSM8926) 2.1 GHz Samsung Exynos 7420 ? 200 MHz OMAP 850
RAM 512 MB 3 GB 16 MB ?
Storage 8 GB 32 GB * 32 MB ? raw hardware
Main Camera 5 megapixel 16 megapixel 2 megapixel 2 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture 720p HD 4K UHD QCIF (176 x 144) ?
Front Camera - 5 megapixel - -
Weight 4.73 oz
(134g)
4.87 oz
(138g)
2.72 oz
(77g)
5.29 oz
(150g)
Dimensions 5.1" x 2.63" x 0.36"
(130 x 67 x 9.1 mm)
5.65" x 2.78" x 0.27"
(143 x 71 x 6.8 mm)
3.78" x 1.89" x 0.66"
(96 x 48 x 16.8 mm)
4.06" x 2.09" x 0.59"
(103 x 53 x 15 mm)
Form Factor Slab Slab Clamshell Slide
Platform / OS Windows Android (proprietary) Windows Mobile Standard
Network Bands

4G LTE: 25, 26, 41

WCDMA: 1, 2, 5

CDMA: 800, 850, 1900

GSM: 850, 900, 1800, 1900

4G LTE: 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 29, 30

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

*

GSM: 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology LTE (Cat 3) LTE (Cat 6) - EDGE
Features 
Fingerprint Reader - Yes - -
Flashlight - Yes - -
GPS / Location n/a n/a - n/a
VR-ready - Yes - -
Accessibility
Hearing Aid Compatible Yes Yes Yes -
Multiple Languages n/a n/a Yes n/a
TTY/TDD (Digital) Yes Yes - -
Alerts
Extra Display - - Yes -
Ringer Profiles - - Yes Yes
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Yes
Classic Audio
Infrared (IR) - Yes - -
MirrorLink - Yes - -
Mobile Hotspot n/a n/a - n/a
NFC - Yes - -
USB Yes
Micro-USB
Yes
Micro-USB
Yes
Micro-USB
Yes
Mini-USB
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
5 (802.11 a,ac,b,g,n)
- Yes
802.11 b,g
Contacts
Picture ID n/a n/a Yes n/a
Ringer ID n/a n/a Yes n/a
Voice Dialing n/a n/a - n/a
Customization
Custom Graphics n/a n/a Yes n/a
Custom Ringtones n/a n/a Yes n/a
Real-Music Ringers n/a n/a Yes n/a
Data & Network
Data Tethering n/a n/a - n/a
WAP / Web Browser n/a n/a Yes n/a
Input
Predictive Text Entry n/a n/a Yes n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes
Touch Screen Yes Yes - -
Memory
Memory Card Slot Yes - Yes Yes
Messaging
Email Client n/a n/a - n/a
Instant Messaging n/a n/a Yes n/a
MMS n/a n/a Yes n/a
Text Messaging Templates n/a n/a Yes n/a
Music
FM Radio Yes - Yes -
Headphone Jack (3.5mm) Yes Yes Yes -
Music Player n/a n/a Yes n/a
Photo & Video
DLNA Yes Yes - -
Miracast - Yes - -
TV Output - Yes - -
Power
Fast Charging - Yes - -
Wireless Charging - Yes - -
Productivity
Alarm n/a n/a Yes n/a
Calculator n/a n/a Yes n/a
Calendar n/a n/a Yes n/a
To-Do List n/a n/a - n/a
Voice Memo n/a n/a Yes n/a
Software
Games n/a n/a Yes n/a
Java (J2ME) n/a n/a Yes n/a
Voice
HD Voice - Yes - -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Nokia Lumia 635 (CDMA) Samsung Galaxy S6 (GSM) Alcatel 665 HTC Shadow
  X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Nokia Lumia 635 (CDMA) Samsung Galaxy S6 (GSM) Alcatel 665 HTC Shadow

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